Silicone rubber sponge composition, sponge, and process for making
CA 2344941 A1 · Owner: Suto, Manabu · Inventors: Baba, Katsuya; Suto, Manabu; Nakamura, Akito
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A silicone rubber sponge composition, a silicone rubber sponge and a process , for, production thereof. The silicone rubber sponge composition comprises (A) 100 parts by, weight organopolysiloxane gum described by average structural unit R a SiO(4a)/2, where R is a, monovalent hydrocarbon group or haloalkyl and a is 1.8 to 2.3 and having a viscosity at 25°C, of 1,000,000 mPa s or above (B) 1 to 400 parts by weight inorganic filler (C) 0.01 to 50, parts by weight hollow thermoplastic resin particles (D) 0.01 to 10 parts by , weight a waterin-oil emulsion with silicone oil an oil phase and (E) a curing agent in an , amount sufficient to cure the composition.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed April 24, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 24, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.